• The Slaven's beach on the Yukon River

    Yukon - Charley Rivers

    National Preserve Alaska

Geologic Activity

An aerial view of the Windfall Mountain Fire in winter
NPS Photo by Ed Christensen

With millions of layers of geology exposed above the surface and two fault lines intersecting in the preserve, Yukon-Charley Rivers is rich with geologic activity. Learn more through the links below.


Windfall Mountain Fire

A puzzling geologic event that began as an explosion in the fall of 2012.

600 million years of geologic history. Dig in.

Did You Know?